These two wires were just out there, exposed when I got the truck. I put the splices on the ends so that they couldn't touch anything. The red/black is hot when the ignition is on, the brown is grounded. They come out of the wiring harness right next to the MAF sensor.

I thought that maybe this truck had a 5 pin MAF sensor on it, and perhaps someone did a shitty transition to a 3 pin, but the colors on the 2 loose wires don't match the colors in the wiring diagram for a 5 pin sensor. Any ideas what these are? I am still having bad hesitation problems.